WASHINGTON — Every year, more than 75,000 eyewitnesses identify suspects in criminal investigations. Those identifications are wrong about a third of the time, a pile of studies suggest.

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In November, the Supreme Court will return to the question of what the Constitution has to say about the use of eyewitness evidence. The last time the court took a hard look at the question was in 1977. Since then, the scientific understanding of human memory has been transformed.